CN203807964U - Sound barrier for urban rail transit - Google Patents
Sound barrier for urban rail transit Download PDFInfo
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- CN203807964U CN203807964U CN201420183557.9U CN201420183557U CN203807964U CN 203807964 U CN203807964 U CN 203807964U CN 201420183557 U CN201420183557 U CN 201420183557U CN 203807964 U CN203807964 U CN 203807964U
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- sound
- sound absorption
- aluminium sheet
- absorber
- track traffic
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
A sound barrier for urban rail transit comprises a sound absorption body and a sound absorption wedge arranged on the front surface of the sound absorption body. The sound absorption body is composed of a multi-hole aluminum plate shell and a polyethylene closed-cell foam plate, wherein a plurality of sound absorption holes are evenly formed in the flat-cuboid-shaped surface of the multi-hole aluminum plate shell, and the rear half portion of an inner cavity in the multi-hole aluminum plate shell is filled with the polyethylene closed-cell foam plate. A sound absorption cavity is formed between the front side face of the polyethylene closed-cell foam plate and the multi-hole aluminum plate shell. The sound absorption wedge is formed by alternately and continuously arranging two or more long-strip-shaped triangular protrusions formed by aluminum plates and two or more long-strip-shaped trapezoid protrusions. Each trapezoid protrusion is filled with centrifugal glass cotton slivers. The lower inclined face of each triangular protrusion and each trapezoid protrusion are respectively provided with a plurality of sound absorption through holes. The left side and the right side of the sound absorption wedge are closed by the aluminum plates. The sound absorption wedge is wrapped by a PVF thin film. According to the sound barrier, multiple types of sound absorption structures are reasonably integrated, and the sound barrier has the advantages of being wide in sound absorption range and high in sound absorption coefficient, and can play a good role in noise controlling.
Description
Technical field
The utility model relates to noise control engineering technical field, is specifically related to a kind of urban track traffic sound barrier.
Background technology
Along with the development of China's economy, urban track traffic shared proportion in Urban Transportation is increasing, and the noise and vibration problem that track traffic brings also more and more merits our study and solves.
Noise barrier is a kind of important measures in noise control engineering, and it is bringing into play unique effect in reducing main line of communication noise, industrial production noise and social environment noise, and is day by day used widely.Noise barrier is the acoustics barrier of being located between noise source and protected area; that one of important measures of local pollution from environmental noise are controlled in open spaces operation place; its effect is to stop from sound source to the direct sound that is subject to sound point; make diffraction sound as far as possible few, the equipment that makes to protect, building, environment field institute are in sound shadow region.
The generation noise of urban track traffic is mainly wheel-rail noise, the non-kinetic noise of vehicle, traction drive system noise and aerial conveyor noise, how to provide a kind of rational in infrastructure, sound absorption scope is large, sound absorption coefficient is high, be applicable to the sound barrier of urban track traffic, becomes the problem of needing at present solution badly.
Summary of the invention
The purpose of this utility model is the deficiency existing in order to overcome prior art, and a kind of rational in infrastructure, sound absorption scope is large, sound absorption coefficient is high urban track traffic sound barrier is provided.
The utility model is achieved through the following technical solutions: a kind of urban track traffic sound barrier, comprise the flat rectangular-shaped sound absorber of upright setting and be arranged at the wedge absorber of this sound absorber front surface, described sound absorber is provided with several sound-absorption hole porous aluminium sheet housing by flat rectangular-shaped surface uniform forms with the polyethylene closed-cell foam plate that is filled in the latter half of porous aluminium sheet enclosure interior cavity, between the leading flank of polyethylene closed-cell foam plate and porous aluminium sheet housing, form sound absorption cavity, the trapezoidal projection of the triangular hill of the plural strip that described wedge absorber is made by aluminium sheet and plural strip replaces from top to bottom continuous arrangement and forms, in described trapezoidal projection, be full of rotary glass sliver, the lower inclined plane of described triangular hill, described trapezoidal projection is all evenly provided with several sound-absorbing through holes, the left and right sides of described wedge absorber is sealed by aluminium sheet, the outside bag of described wedge absorber is established PVF film.
The perforated percentage of described porous aluminium sheet housing, the lower inclined plane of described triangular hill and the trapezoidal projection of described strip is 33%, and every adjacent two rows' sound-absorption hole is all staggered, and the aperture of described sound-absorption hole is 4mm.
The thickness that forms the aluminium sheet of described porous aluminium sheet housing and form the aluminium sheet of described wedge absorber is 0.8mm.
The trailing flank of described sound absorber is horizontally arranged with the galvanized sheet of two strips, and the upper end of described galvanized sheet and bottom be bending forward all.
The thickness of described galvanized sheet is 1.2mm.
The surface of described galvanized sheet is provided with electrostatic spray layer.
The beneficial effects of the utility model are: the utility model is reasonably gathered in one by multiple sound-absorbing structure, have effectively expanded sound absorption scope, have improved sound absorption coefficient, and it is applicable in track traffic, can play the effect of good control noise.
Accompanying drawing explanation
Fig. 1 is Facad structure schematic diagram of the present utility model;
Fig. 2 is cross-sectional view of the present utility model.
In the drawings: 1-porous aluminium sheet housing; 2-polyethylene closed-cell foam plate; The 3-cavity that absorbs sound; 4-triangular hill; The lower inclined plane of 5-triangular hill; The trapezoidal projection of 6-; 7-rotary glass sliver; 8-galvanized sheet; 9-wedge absorber; 10-sound absorber.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As Fig. 1, shown in Fig. 2, a kind of rail traffic noise barrier, comprise the flat rectangular-shaped sound absorber 10 of upright setting and be arranged at the wedge absorber 9 of these sound absorber 10 front surfaces, sound absorber 10 is provided with several sound-absorption hole porous aluminium sheet housing 1 by flat rectangular-shaped surface uniform forms with the polyethylene closed-cell foam plate 2 that is filled in the latter half of porous aluminium sheet housing 1 internal cavities, between the leading flank of polyethylene closed-cell foam plate 2 and porous aluminium sheet housing 1, form sound absorption cavity 3, trapezoidal protruding 6 of the triangular hill 4 of the plural strip that wedge absorber 9 is made by aluminium sheet and plural strip replaces from top to bottom continuous arrangement and forms, in trapezoidal protruding 6, be full of rotary glass sliver 7, the lower inclined plane 5 of triangular hill 4, trapezoidal protruding 6 are all evenly provided with several sound-absorbing through holes, the left and right sides of wedge absorber 9 is sealed by aluminium sheet, the outside bag of wedge absorber 9 is established PVF film.
In the utility model, trapezoidal protruding 6 perforated percentage of the lower inclined plane 5 of porous aluminium sheet housing 1, triangular hill 4 and strip is 33%, and every adjacent two rows' sound-absorption hole are all staggered, and the aperture of sound-absorption hole is 4mm.The thickness that forms the aluminium sheet of porous aluminium sheet housing 1 and the aluminium sheet of formation wedge absorber 9 is 0.8mm.The trailing flank of sound absorber 10 is horizontally arranged with the galvanized sheet 8 of two strips, and the upper end of galvanized sheet 8 and bottom be bending forward all.The thickness of galvanized sheet 8 is 1.2mm.The surface of galvanized sheet 8 is provided with electrostatic spray layer.
Sound absorber 10 and wedge absorber 9 aluminium sheets are made, it has advantages of, and intensity is high, quality is light, on-the-spot easy for installation simple and easy, pollution-free, can secondary recovery utilization and easy to maintenance.The surface of aluminium sheet is provided with a plurality of sound-absorption hole, and sound enters after aperture, just can be in the inwall of structure interreflection, until the energy of most sound wave all consumes, become heat energy, to have reached the effect of inhaling sound insulation, its sound absorbing capabilities is good, can reduce largely noise.PVF film and aluminium sheet are mainly used in absorbing intermediate frequency noise.Centrifugally glass-wool internal fiber is fluffy staggered, there is large quantity micropore gap, can make acoustic attenuation by the many tiny duct from surface to inside, take and absorb medium-high frequency sound wave as main, it,, except absorbing air borne sound, can also weaken solid-borne sound and the caused vibration of empty chamber gas sound.Polyethylene closed-cell foam, light weight, ageing-resistant performance is good, and its inside has a plurality of independently bubble structures, has good defening effect.
Finally should be noted that; above content is only in order to illustrate the technical solution of the utility model; but not restriction to the utility model protection domain; the simple modification that those of ordinary skill in the art carries out the technical solution of the utility model or be equal to replacement, does not all depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. a urban track traffic sound barrier, it is characterized in that: described urban track traffic sound barrier comprises the flat rectangular-shaped sound absorber of upright setting and is arranged at the wedge absorber of this sound absorber front surface, described sound absorber is provided with several sound-absorption hole porous aluminium sheet housing by flat rectangular-shaped surface uniform forms with the polyethylene closed-cell foam plate that is filled in the latter half of porous aluminium sheet enclosure interior cavity, between the leading flank of polyethylene closed-cell foam plate and porous aluminium sheet housing, form sound absorption cavity, the trapezoidal projection of the triangular hill of the plural strip that described wedge absorber is made by aluminium sheet and plural strip replaces from top to bottom continuous arrangement and forms, in described trapezoidal projection, be full of rotary glass sliver, the lower inclined plane of described triangular hill, described trapezoidal projection is all evenly provided with several sound-absorbing through holes, the left and right sides of described wedge absorber is sealed by aluminium sheet, the outside bag of described wedge absorber is established PVF film.
2. urban track traffic sound barrier according to claim 1, it is characterized in that: the perforated percentage of described porous aluminium sheet housing, the lower inclined plane of described triangular hill and the trapezoidal projection of described strip is 33%, every adjacent two rows' sound-absorption hole is all staggered, and the aperture of described sound-absorption hole is 4mm.
3. urban track traffic sound barrier according to claim 1, is characterized in that: the thickness that forms the aluminium sheet of described porous aluminium sheet housing and form the aluminium sheet of described wedge absorber is 0.8mm.
4. urban track traffic sound barrier according to claim 1, is characterized in that: the trailing flank of described sound absorber is horizontally arranged with the galvanized sheet of two strips, and the upper end of described galvanized sheet and bottom be bending forward all.
5. urban track traffic sound barrier according to claim 4, is characterized in that: the thickness of described galvanized sheet is 1.2mm.
6. urban track traffic sound barrier according to claim 4, is characterized in that: the surface of described galvanized sheet is provided with electrostatic spray layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183557.9U CN203807964U (en) | 2014-04-16 | 2014-04-16 | Sound barrier for urban rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183557.9U CN203807964U (en) | 2014-04-16 | 2014-04-16 | Sound barrier for urban rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807964U true CN203807964U (en) | 2014-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420183557.9U Expired - Fee Related CN203807964U (en) | 2014-04-16 | 2014-04-16 | Sound barrier for urban rail transit |
Country Status (1)
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| CN (1) | CN203807964U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269166A (en) * | 2014-10-11 | 2015-01-07 | 国家电网公司 | Dual-layer three-dimensional noise reduction protection screen |
| CN105401535A (en) * | 2015-12-24 | 2016-03-16 | 江苏远兴环保集团有限公司 | Anti-electromagnetic radiation noise barrier plate |
| CN105862614A (en) * | 2016-06-07 | 2016-08-17 | 苏州禾昌聚合材料股份有限公司 | Novel sound barrier based on macromolecular polymer |
| CN106952640A (en) * | 2017-04-26 | 2017-07-14 | 大连理工大学 | Control the ultra-thin sound absorption and insulation structure in broadband of acoustic wave propagation path |
| CN107620265A (en) * | 2017-09-13 | 2018-01-23 | 重庆交通大学 | A kind of broken line type sound barrier suitable for straddle-type monorail |
| CN108004948A (en) * | 2018-01-09 | 2018-05-08 | 杨小武 | The enhanced GRC sound insulationg boards of monoblock type |
| CN108424509A (en) * | 2018-03-13 | 2018-08-21 | 吉林大学 | Bionic non-smooth surface polyurethane foam board preparation method based on Asio otus wing table |
| CN108729368A (en) * | 2018-06-08 | 2018-11-02 | 四川双铁科技有限公司 | A kind of enhancing light lath and preparation method thereof |
| CN109137767A (en) * | 2018-10-26 | 2019-01-04 | 苏州岸肯电子科技有限公司 | A kind of noise barrier |
| CN109243421A (en) * | 2018-11-08 | 2019-01-18 | 南京光声超构材料研究院有限公司 | A kind of low-frequency sound-absorbing structure for sqouynd absorption lowering noise |
| CN112740543A (en) * | 2018-09-19 | 2021-04-30 | 马丁.瓦科尼格 | Wall element |
-
2014
- 2014-04-16 CN CN201420183557.9U patent/CN203807964U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269166A (en) * | 2014-10-11 | 2015-01-07 | 国家电网公司 | Dual-layer three-dimensional noise reduction protection screen |
| CN105401535A (en) * | 2015-12-24 | 2016-03-16 | 江苏远兴环保集团有限公司 | Anti-electromagnetic radiation noise barrier plate |
| CN105862614A (en) * | 2016-06-07 | 2016-08-17 | 苏州禾昌聚合材料股份有限公司 | Novel sound barrier based on macromolecular polymer |
| CN105862614B (en) * | 2016-06-07 | 2018-04-13 | 苏州禾昌聚合材料股份有限公司 | A kind of new sound barrier based on high molecular polymer |
| CN106952640B (en) * | 2017-04-26 | 2023-05-12 | 大连理工大学 | Broadband ultrathin sound absorption and insulation structure for controlling sound wave propagation path |
| CN106952640A (en) * | 2017-04-26 | 2017-07-14 | 大连理工大学 | Control the ultra-thin sound absorption and insulation structure in broadband of acoustic wave propagation path |
| CN107620265A (en) * | 2017-09-13 | 2018-01-23 | 重庆交通大学 | A kind of broken line type sound barrier suitable for straddle-type monorail |
| CN108004948A (en) * | 2018-01-09 | 2018-05-08 | 杨小武 | The enhanced GRC sound insulationg boards of monoblock type |
| CN108424509A (en) * | 2018-03-13 | 2018-08-21 | 吉林大学 | Bionic non-smooth surface polyurethane foam board preparation method based on Asio otus wing table |
| CN108729368A (en) * | 2018-06-08 | 2018-11-02 | 四川双铁科技有限公司 | A kind of enhancing light lath and preparation method thereof |
| CN112740543A (en) * | 2018-09-19 | 2021-04-30 | 马丁.瓦科尼格 | Wall element |
| CN109137767A (en) * | 2018-10-26 | 2019-01-04 | 苏州岸肯电子科技有限公司 | A kind of noise barrier |
| CN109243421A (en) * | 2018-11-08 | 2019-01-18 | 南京光声超构材料研究院有限公司 | A kind of low-frequency sound-absorbing structure for sqouynd absorption lowering noise |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20170416 |
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| CF01 | Termination of patent right due to non-payment of annual fee |